Failing Grace (2017) online

Maggie Novak is living the quietest life she can. She lives with her younger sister, Grace, and they keep to themselves. Maggie is trying to make sure that Jack Elligott never finds them, if he should return from his watery grave. Jack, Maggie's ex-boyfriend, became dangerously obsessed with Grace. He was so far gone into his madness, that he killed the sisters' parents and tried to murder Maggie. But she survived. He didn't. Or so she thought. Now five years later, a much older Maggie and Grace are about to leave town for a fun weekend with friends. But unbeknownst to the girls, Jack's got them right where he wants them. And he will stop at nothing until he gets his girl.